My mother gave me this necklace of sorts and I can't seem to identify its purpose. (I'm fairly new to this site as well and I don't quite know how to upload an image of it.)
It seems to be developed off of the 108-sandalwood prayer beads in Hinduism, but 18 beads have been replaced with gemstones.
In the order (Tiger's eye - Onyx - Lapis Lazuli - Aventurine - Yellow agate - Moonstone - Pink Quartz - Amethyst - Citrine) and 9 in reverse.
Between the two citrines, there's a branch where there's a (Clear Quartz - Lava stone - A single angel's wing).
If anyone would be kind enough to explain what its purpose would be, I would appreciate it. My mother gave it to me on New Year's Eve of 2018, and told me not to take it off.